中心孔打孔机的设计说明书.doc

大学兴湘学院
专业课程设计说明书
题 目中心孔打孔机的设计
专 业 机械设计制造及其自动化
班 级 机械6班
学 号 2012964406
姓 名 方海军
指导教师 睿
完成日期 2016 年 01 月 22 日
摘 要
中心打孔机,包括机壳、电机座、电机导轨和两个压杆,所述机壳具有推块,机壳的顶部具有螺母,螺杆的一端通过螺母穿过机壳的顶部与推块相连,电机导轨与机壳固定连接,电机座通过电机导轨与机壳滑动连接,电机座具有电机,电机的输出端连接有动力头;所述推块的下端具有滚轮,推块的中部两侧对称开有向上的两个斜槽,每个压杆的一端装有导向轮,导向轮在斜槽滑动,每个压杆的中部通过回转销与机壳转动连接,每个压杆的另一端也均装有滚轮。本实用新型的中心打孔机,不仅能快速的夹紧工件,三点快速夹紧,自动定心,实现自动打中心孔的目的。
中、长圆钢工件，加工时圆跳动大，一般须预先钻好中心孔后，再用顶尖定位一端进行车削加工。本设计的目的在于设计一种专用的中心孔钻孔设备，可方便地对圆钢工件进行中心孔钻孔操作。
关键字：中心钻孔； 中心定位； 带传动； 花键传动
Abstract
Center punch, including chassis, motor, rail, and two pressive bar inside the casing has stated push block, the top of the chassis with a nut, one end of the screw nut, through the top of the chassis and blocks are linked together, motor guide rail and the casing is fixed, the motor seat by machine guide rail and slide casing connection, motor seat is, the output of the motor connection power head; As described in the lower end of the block with a roller, block in the middle of the bilateral symmetry runs up two chute, each one end of the push rod is equipped with guide wheel, guide wheel sliding inside the chute, each lever through back to resellers and chassis rotation connection, in the middle of each lever and on the other side of the roller. Center punching machine of the utility model not only can fast clamping workpiece, three fast clamping, automatic centering, the purpose of realizing automatic centering.
Round beat, in the long round steel workpiece, processing, generally after good center hole drill in advance, then using top positioning end cutting processing. The purpose of this design is to design a special center hole drilling equipment, easily on round steel workpiece center hole drilling operation.
Key words:Center hole； Center